Added Bower's directory (lib) to be ignored by Git.
Added Bower's directory (lib) to be ignored by Git.

sidharta/sales-gallery,sidharta/sales-gallery,tuliobraga/tech-gallery,tuliobraga/tech-gallery,ciandt-dev/tech-gallery,sidharta/sales-gallery,ciandt-dev/tech-gallery,tuliobraga/tech-gallery,ciandt-dev/tech-gallery